ICD-10 Code K05.211 – Aggressive periodontitis, localized, slight (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K05.211 – Aggressive periodontitis, localized, slight
What it is
K05.211 identifies localized aggressive periodontitis with slight severity. Use it for a rapid, destructive periodontal condition affecting a limited number of teeth, as documented by the clinician.
Clinical signs
Typical findings include localized attachment loss, periodontal pocketing, and bone loss around selected teeth. Clinical features vary; refer to documentation, especially when the record notes a rapid course or early onset.
When to use this code
Use this code when the provider documents localized aggressive periodontitis and specifies slight severity. It fits records that clearly distinguish the disease from chronic periodontitis or generalized periodontal involvement. If the chart is unclear, check documentation before assigning the code.
Do not use for
Do not use K05.211 for generalized periodontitis, gingivitis, or unspecified periodontal disease. If the note does not confirm both localization and slight severity, choose a more accurate code or check documentation.
Coding tip
Confirm the chart states both “localized” and “slight” before coding K05.211.